Received: 15 October 2020
Accepted: 21 December 2020
First Online: 22 January 2021
Compliance with ethical guidelines
: M. Loew received royalties from Wright/Tornier Inc., not related to the subject of this work. S. Lichtenberg is paid consultant from Arthrex und Exactech and received Royalties von Arthrex, not related to the subject of this work. No company had any input into the review, data analysis, or manuscript preparation. The other authors, their immediate families, and any research foundations with which they are affiliated have not received any financial payments or other benefits from any commercial entity related to the subject of this article. M. Schnetzke declares that he has no competing interests.
: For this article no studies with human participants or animals were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case.